Two days ago, the world record for the biggest mattress-based human domino run stood at 550, as carried out by a group of plucky Belgians last year.

Today, New Orleans holds the coveted title, with 850 volunteers strapping themselves to mattresses and falling over and over and over and over until every single one of them was giggling on the floor.

But if that 850-high watermark seems unbeatable, remember how easy it is to do - all you need is 851 people you know, enough money to buy them all mattresses, a massive aircraft hangar and the unstoppable desire for 10 minutes of fame.